Low sink-induced stomatal closure alters photosynthetic rates of source leaves in beans as dependent on H2O2 and ABA accumulation in guard cells

CORC > 武汉植物园 > 中国科学院武汉植物园

	Low sink-induced stomatal closure alters photosynthetic rates of source leaves in beans as dependent on H2O2 and ABA accumulation in guard cells
	Ma, L.; Li, S. H.; Wang, L. J.; Archbold, D. D.; Wu, B. H.; Fan, P. G.; Duan, W.; Xu, M.
刊名	RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
	2014
英文摘要	Low sink demand provided by pod removal and stem girdling of beans (Vicia faba, cv. Daqingshan) (-Sink) induced a significantly lower net photosynthetic rate (P (n)), stomatal conductance (g (s)), internal CO2 concentration (C (i)), and transpiration rate (E) compared with pod and root sink retention (CK). This depression in P (n) was due to stomatal limitation. Low sink demand of -Sink plants resulted in a higher leaf sucrose content, but a lower sucrose content in guard cells. Moreover, the significant accumulation of H2O2 and ABA were observed in both leaves and guard cells of -Sink plants. The most intensive electron dense deposit of cerium perhydroxides, produced by H2O2 reaction with cerium chloride, was present in the cell walls, especially the dorsal walls of guard cells. Immunogold electron-microscopy localization of ABA showed that ABA was distributed in ventral walls of guard cells and the intercellular space of mesophyll cells of -Sink leaves in contrast to CK plants. Application of exogenous sucrose to isolated bean leaves increased H2O2 and ABA contents. H2O2 and ABA in leaves was likely generated by two independently regulated pathways, each affected by the high sucrose concentration induced by low sink demand. Increased sucrose in leaves in response to low sink demand may have caused the increase of H2O2 and ABA, and their accumulation in mesophyll cells and guard cells was likely the primary cause for stomatal closure under low sink demand.
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/445]
专题	中国科学院武汉植物园
推荐引用方式 GB/T 7714	Ma, L.,Li, S. H.,Wang, L. J.,et al. Low sink-induced stomatal closure alters photosynthetic rates of source leaves in beans as dependent on H2O2 and ABA accumulation in guard cells[J]. RUSSIAN JOURNAL OF PLANT PHYSIOLOGY,2014.
APA	Ma, L..,Li, S. H..,Wang, L. J..,Archbold, D. D..,Wu, B. H..,...&Xu, M..(2014).Low sink-induced stomatal closure alters photosynthetic rates of source leaves in beans as dependent on H2O2 and ABA accumulation in guard cells.RUSSIAN JOURNAL OF PLANT PHYSIOLOGY.
MLA	Ma, L.,et al."Low sink-induced stomatal closure alters photosynthetic rates of source leaves in beans as dependent on H2O2 and ABA accumulation in guard cells".RUSSIAN JOURNAL OF PLANT PHYSIOLOGY (2014).